Une_Formation

Une Formation

Une Formation

Geological Formation

The Une Formation (Spanish: Formación Une, Kiu) is a geological formation of the Altiplano Cundiboyacense, Eastern Ranges of the Colombian Andes. The predominantly sandstone formation dates to the Middle Cretaceous period; Albian to Cenomanian epochs and has a maximum thickness of 1,100 metres (3,600 ft).

Quick Facts Type, Unit of ...

Etymology

The formation was defined in 1957 by Hubach after Une, Cundinamarca.[1]

Description

Lithologies

The Une Formation has a maximum thickness of 1,100 metres (3,600 ft) and is characterised by a sequence of sandstones.[2] Fossils of Heminautilus etheringtoni have been found in the Une Formation.[3]

Stratigraphy and depositional environment

The Une Formation, part of the Villeta Group, overlies the Fómeque Formation and is overlain by the Chipaque Formation. The age has been estimated to be Albian-Cenomanian. Stratigraphically, the formation is time equivalent with the Simijaca, Aguardiente, Caballos and Pacho Formations. The formation has been deposited in a near shore deltaic environment.[4]

Outcrops

Une Formation
Type locality of the Une Formation to the south of the Bogotá savanna

The Une Formation is apart from its type locality, found on the Sumapaz Páramo.[2]

Regional correlations

More information Ma, Age ...
Legend
  • group
  • important formation
  • fossiliferous formation
  • minor formation
  • (age in Ma)
  • proximal Llanos (Medina)[note 1]
  • distal Llanos (Saltarin 1A well)[note 2]

See also

Geology of the Eastern Hills
Geology of the Ocetá Páramo
Geology of the Altiplano Cundiboyacense

Notes

  1. [N 1]
    based on Duarte et al. (2019)[41], García González et al. (2009),[42] and geological report of Villavicencio[43]
  2. [N 2]
    based on Duarte et al. (2019)[41] and the hydrocarbon potential evaluation performed by the UIS and ANH in 2009[44]

References

  1. [1]
    Acosta & Ulloa, 2002, p.53
  2. [2]
    Acosta & Ulloa, 2002, p.54
  3. [3]
    Badouin et al., 2016, p.87
  4. [4]
    Acosta & Ulloa, 2002, p.46
  5. [5]
    García González et al., 2009, p.27
  6. [6]
    García González et al., 2009, p.50
  7. [7]
    García González et al., 2009, p.85
  8. [8]
    Barrero et al., 2007, p.60
  9. [9]
    Barrero et al., 2007, p.58
  10. [10]
    Plancha 111, 2001, p.29
  11. [11]
    Plancha 177, 2015, p.39
  12. [12]
    Plancha 111, 2001, p.26
  13. [13]
    Plancha 111, 2001, p.24
  14. [14]
    Plancha 111, 2001, p.23
  15. [15]
    Pulido & Gómez, 2001, p.32
  16. [16]
    Pulido & Gómez, 2001, p.30
  17. [17]
    Pulido & Gómez, 2001, pp.21-26
  18. [18]
    Pulido & Gómez, 2001, p.28
  19. [19]
    Correa Martínez et al., 2019, p.49
  20. [20]
    Plancha 303, 2002, p.27
  21. [21]
    Terraza et al., 2008, p.22
  22. [22]
    Plancha 229, 2015, pp.46-55
  23. [23]
    Plancha 303, 2002, p.26
  24. [24]
    Moreno Sánchez et al., 2009, p.53
  25. [25]
    Mantilla Figueroa et al., 2015, p.43
  26. [26]
    Manosalva Sánchez et al., 2017, p.84
  27. [27]
    Plancha 303, 2002, p.24
  28. [28]
    Mantilla Figueroa et al., 2015, p.42
  29. [29]
    Arango Mejía et al., 2012, p.25
  30. [30]
    Plancha 350, 2011, p.49
  31. [31]
    Pulido & Gómez, 2001, pp.17-21
  32. [32]
    Plancha 111, 2001, p.13
  33. [33]
    Plancha 303, 2002, p.23
  34. [34]
    Plancha 348, 2015, p.38
  35. [35]
    Planchas 367-414, 2003, p.35
  36. [36]
    Toro Toro et al., 2014, p.22
  37. [37]
    Plancha 303, 2002, p.21
  38. [38]
    Bonilla et al., 2016, p.19
  39. [39]
    Gómez Tapias et al., 2015, p.209
  40. [40]
    Bonilla et al., 2016, p.22
  41. [41]
    Duarte et al., 2019
  42. [42]
    García González et al., 2009
  43. [43]
    Pulido & Gómez, 2001
  44. [44]
    García González et al., 2009, p.60

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